The Apple boss has admitted he's keen to support features which help limit screen time because he's convinced there's a "problem" if someone is looking at their device more than into "somebody's eyes".

He told Wired UK: "I worry about people endlessly scrolling. That’s the reason we do things like Screen Time, to try to guide people.

"We support people putting limits on themselves, like the number of notifications you get. We do a lot of things in the parental controls area as well.

"My fundamental belief is, if you’re looking at your phone more than you’re looking in somebody’s eyes, that’s a problem."

In the interview, Tim went on to reveal he hopes Apple's finest contribution to the tech world will be in the field of health innovations.

He explained: "It’s clear to me that if you zoom out way into the future, and you look back and ask what Apple’s biggest contribution was, it will be in the health area.

"That’s what I really believe. When we started pulling that string with the Apple Watch, it was a cascade of events. We started with something simple, like monitoring your heart rate, and then figured out we could pick up heart signals to get to an EKG and an AFib determination."

Tim went on to insist Apple's systems to monitor sleep apnea has already been saving lives. He added: "Now we are monitoring sleep apnea. I’ve gotten so many notes over time from people who would have not survived had it not been for the alert on their wrist."